package com.pkt.item.mapper;

import com.item.piketao.dao.Brand;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;

@Repository
public interface BrandMapper extends Mapper<Brand> {
    /**
     * 新增商品分类和品牌中间表数据
     * @param cid 商品分类id
     * @param bid 品牌id
     * @return
     */
    @Insert("INSERT INTO tb_category_brand (category_id, brand_id) VALUES (#{cid},#{bid})")
    int insertCategoryBrand(@Param("cid") Long cid, @Param("bid") Long bid);

    /**
     * 通过Cid查询品牌
     * @param cid
     * @return
     */
    @Select("SELECT * from tb_brand a join tb_category_brand b on a.id = b.brand_id and b.category_id = #{cid} ")
    List<Brand> selectBrandsByCid(Long cid);
}